ASP.NET AJAX WebRequest

        <pre data-sub="prettyprint:_">
        // Instantiate a WebRequest.
        var wRequest = new Sys.Net.WebRequest();

        // Set the request URL.
        wRequest.set_url("getTarget.htm");

        // Set the request verb.
        wRequest.set_httpVerb("GET");

        // Set the request callback function.
        wRequest.add_completed(OnWebRequestCompleted);


        // Execute the request.
        wRequest.invoke();

        // This callback function processes the
        // request return values. It is called asynchronously
        // by the current executor.
        function OnWebRequestCompleted(executor, eventArgs)
        {
        if(executor.get_responseAvailable())
        {
        // Clear the previous results.

        resultElement.innerHTML = "";

        // Display Web request status.
        resultElement.innerHTML +=
        "Status: [" + executor.get_statusCode() + " " +
        executor.get_statusText() + "]" + "<br/>";

        // Display Web request headers.
        resultElement.innerHTML +=
        "Headers: ";

        resultElement.innerHTML +=
        executor.getAllResponseHeaders() + "<br/>";

        // Display Web request body.
        resultElement.innerHTML +=
        "Body:";

        if(document.all)
        resultElement.innerText +=
        executor.get_responseData();
        else
        resultElement.textContent +=
        executor.get_responseData();
        }

        }
        </pre>